Ensmore



1. H. DENSMORE.

Car Axle. l`

Patented Aug.i11,l 1868.

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MFEIERS. PHOTO-LHHOGRAPHER. WASHINGTON D C @uitrit tu'tt @anni ffirr..

J.' H.DNSMORE, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND HIRAMFULLER, OF HALLOWELL MAINE.

Laim Patent No. 80,858, dated August 11,1868.

:turnover GAR-TRUCK.

'To ALL WHOM 4IT .MAY ooNoERN:

o Be it known that I, J. H. DENSMORE, of Boston, in'the county ofSuiiolk, and State of Massachusetts, have inventedv new and usefulImprovements in Car-Trucks; and I dohereby declare that the followingisa full,

eleargand exact description thereof, which will enable those skilled inthe art to make and use the same, reference being had to theaccompanying drawings, forming part of this specification, in which-Figure 1 is a longitudinal section of the sleeves through line A B, iig.3.

Figure 2 is a similar section through line GD of g. 3. Figure 3 is across-section of the sleeves and axles, through the lino ET, iigs. 1 and2. Similar letters of reference indicate corresponding parts. l Theobject of this invention is to provide a'means of preventing accident onrailwaytrains 'through the breakage of an axle or axles. il

It consists in the provision of axle-sleeves properly affixed 'totheframework of the truckyand enclosingy the whole length of theaxlesbetweent-hewheels, in such amanner that, should the axle ofV any onepair of wheels become broken,the wheels will still be held in place.onfthe rails, and continue injmotion with `suiicient steadiness untilthe train is stopped, thereby preserving the trainfrom accident.

'In the drawings, Gr are the ax-les,rand H the safety-'sleeves enclosingthem without touching.

The sleeves are axed to safety-beams ff,.whieh'latter are aliixed to themain cross-timber, I, of the truck.

e are the housing-boxes or journals for the axle-ends, i u Y Figs. 1 and2 exhibit diferent forms of the'safety-sleeves a'nd'the accessory parts.l

The sleeve shown at iig. 1 is provided'w'i/'th flanges, a, whieh'enolosethe hub-extensions b, lwhich lattorare of greater diameter than the eyeof thewheel, andthe-part of the axle fitting within them will b'e,consequently, larger than that within the eye 4of the wheel, so thatthe` .axle will be more liable to break at that point; but should it..for any reason, break in that vicinity, (as at the point d,)the sleeve,at a, will act as a bearing `'for the hub-extension, I?, `and thusretain the wheel in a position torun 'on the rails.

In iig. 2, a more'siinple and nearly 'as efficacious form of tlfesleeveends is shown.

In this forxn the flange 7' is straight, and its face abutting vagainstthe proximate face of the hub of' the wheel, serves to retain the wheelin a vertical positioinwhen' the axle is broken'at the point el, asbefore; but when the axle isbroken within the sleeve, it will hold thewheel in the proper position, and with equal firmness as the form ofsleeve shown in iig. 1. .i

The form of sleeve shown iin-iig. 1 is designed asa new eonstructiun,and is not adapted tothe axles and.

wheels already `in use; but that shown at figli!4 may be readily hppliedto the axles and wheels nw in use, for

the said 4sleeve is-made in` two equal parts, andprovided with llateralianges or lugs, through whiohv screw-'bolts are fitted, to hold the saidparts firmly together. Y A

The complete sleeve is then alixed to the sai`ety-bea1ns ff` by longboltshl, whichare provided with jamnutsV to hold bolts firmly aiixed tothe safety-beams,whiletheir lower portions play freely through theguidelugs 11i of the sleeve. l Y o o Springs, c,.ot` metal or rubber,are aiiixed between the safety-beams and the sleeve, to keep the latterfrom undu-o motion; that is to say, to keep it from rising and touchingthe axle'while the wheels are running in their ordinary condition; l Y nThe spaoe,7z, between the axles and the sleeves, (of both forms ofconstruction,) is'forthe purpose of allowing a small amount ofunavoidable vibration to take,place without contact of the sleeves andaxles.

The cross-timber I is aixed tothe plates or'springs JJ, which latter areailixed to Athe journal-boxes e of the-truck, and thus the truck issupported, while thoaxles remain unbroken; but should an axle break, thesleeve furnishes a bearing for the stump of the axle, as will beobvious.

I desire to be understood als not limiting myself to the precis@construction of the truck as shown in the drawings, as lche same can bevariously modied or changed without departing' from the brinciple of myinvention.

i -I vclaim :is new, and desire to's'ecure by Letters Patent- Theconstruction andanrangellent of safety-SleeVe. H, substantially as Shownand described, in combination with the axles and wheels of oar ortender-trucks, when the saidisleeves are made in twoparts and aixed tosafety-beamsff. all as set forth.

- e J. I-L DENSMORE.

Witnesses:

CHAS. B. F. ADAMS, S'. AUGUSTUS ROGERS'.

